EP1242214B1 - Cutting tool with device for indirect cooling of an indexable insert - Google Patents

Cutting tool with device for indirect cooling of an indexable insert Download PDF

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Publication number
EP1242214B1
EP1242214B1 EP00993698A EP00993698A EP1242214B1 EP 1242214 B1 EP1242214 B1 EP 1242214B1 EP 00993698 A EP00993698 A EP 00993698A EP 00993698 A EP00993698 A EP 00993698A EP 1242214 B1 EP1242214 B1 EP 1242214B1
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EP
European Patent Office
Prior art keywords
tool
coolant
cooling
cutting
connection
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Expired - Lifetime
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EP00993698A
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German (de)
French (fr)
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EP1242214A2 (en
Inventor
Volkmar Mauel
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Mauel Volkmar
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Mauel Volkmar
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Publication of EP1242214A2 publication Critical patent/EP1242214A2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/28—Features relating to lubricating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/06—Drills with lubricating or cooling equipment

Definitions

  • the invention relates to a cutting tool with a device for indirect cooling.
  • a turning tool or milling cutter is particularly advantageous.
  • DE 82 22 702 U proposes in the tool itself to provide a channel for coolant, which in one on the workpiece directed nozzle of the tool opens.
  • EP 0 186 067 A1 which describes the next-to-date state of the art, is a tool for machining Edit known, which has a feed hole and a discharge hole for a coolant. These holes open into an entry channel and into an exit channel of a cutting plate so that the feed hole and ultimately the drain hole in an interior of the Guide the insert.
  • the disadvantage here is that the insert can only be attached to the tool in such a way that both the feed hole and import channel as well as discharge bore and export channel with each other have to swear. This limits the use of those disclosed here Insert extremely one.
  • the manufacture of such Insert with its interior very cost-intensive, so that here tool described is overall very uneconomical.
  • the invention proposes a cutting tool according to claim 1.
  • Such an arrangement makes it possible for the first time to have a tool to cool immediately or to bring in contact with a coolant without that this coolant gets to the machined workpiece and thus is lost or has to be laboriously recycled.
  • indirect means Cooling every process in which a coolant or the like is used the cutting point or the sharpness of a cutting edge or one The insert does not come into contact.
  • Indirect cooling of this type is already known per se, since it is already Tool turret or tool holder with coolant channels on the Are market.
  • the known arrangements work with conventional ones Tools, such as turning tools or milling cutters. This creates relatively many material or component transitions that lead to very high Temperature gradients between the cutting point and the actual one Lead cooling system.
  • the conventional tools themselves straight indirect cooling means such as those of the present invention not be suggested.
  • the means for indirect make it possible Cooling, these can be bores or channels, through which a coolant into the tool, such as one Turning tool or a milling cutter, the number of material or Significantly reduce assembly transitions and a much better one Ensure cooling of the cutting point.
  • the tool according to the invention also enables already known cutting processes significant improvements compared to a direct Applying coolant to the workpiece.
  • the coolant tends to come off the workpiece to be flung away. This is due to centrifugal force, for example.
  • the high temperature at the cutting point leads to evaporation processes, which counteract the tracking of liquid coolant. All these disadvantages occur with the indirect Do not cool down.
  • the coolant throughput as well as the cooling device can cool the cutting Master job almost arbitrarily. It also allows the invention, for machining cutting oils or the like use that none because of their poor cooling properties could find application.
  • Cooling is particularly effective when the cooling device is immediate is in contact with a cutting edge of the cutting tool. It understands that in this context each assembly of the tool that is effective as a cutting edge. The following applies in particular this also for indexable inserts.
  • a cooling channel is preferably provided in the tool, through which a coolant can be passed.
  • This cooling channel has one Coolant inlet and a coolant outlet.
  • the coolant outlet From the Point the cutting edge of the tool away. The one leaving the cooling channel Coolant can then, depending on the application, together with the chips disposed of or collected in a separate container.
  • the coolant outlet has a cooling system connection, so that a appropriate coolant easily collected and - if necessary - can be reused.
  • the coolant inlet is also provided with a cooling system connection, then so the coolant can be easily circulated.
  • a separate cooling system can be provided for the tool.
  • the cooling system the tool via at least one connection with a cooling system of a tool turret.
  • the cooling system the tool via at least one connection with a cooling system of a tool turret.
  • a tool according to the invention it is advantageous if First a basic body with the necessary holes for the coolant flow provided. Then the free surfaces of the base body processed so that it is the necessary for the tool Takes shape.
  • This machining process preferably includes the complex ones machining operations and the like. After that, the holes closed at the necessary positions and so the cooling channel or the cooling channels provided. This can be followed up by post-processing, for example, regrinding.
  • the tool body consists of at least two standard bodies exists that are or will be firmly connected: at least one this standard body can already have a prefabricated bore, so that during the actual production of the tool on the complex Drilling process can be dispensed with.
  • such Standard body from a semi-finished product, for example with rectangular ones Cross section, along the longitudinal direction of which a bore is provided become.
  • a semi-finished product for example with rectangular ones Cross section, along the longitudinal direction of which a bore is provided become.
  • only smaller holes are still available.
  • the standard body can for example by welding to the Basic body to be connected. Such a connection is proportionate easy to manufacture and has proven to be reliable in operation.
  • corresponding ones can also be used Recesses in which a coolant flow should subsequently take place in the corresponding base body are formed. By hanging one Closing plate or similar measures can then be used Recesses are closed.
  • the cutting tool according to the invention enables dry process control when processing many materials. This is special Valuable from an ecological point of view, as those that arise during the machining process Chips are free of coolant. This will not just cost you saved in the disposal of these chips, but also in the provision of coolants, since this is preferably in a closed Cooling circuit and can therefore be used for a long time without doing so to get lost.
  • the tool shown in Fig. 1 is a turning tool 1, which is essentially consists of a base body 2 and a cutting plate 3.
  • the Base body 2 has two main bores 4 and 5, which are essentially parallel to each other in the longitudinal direction of the main body extend.
  • the two main holes 4 and 5 are each central holes two standard bodies 10 and 11, which by means of two weld seams 12 and 13 are assembled to form the base body 2.
  • the base body 2 also has the bores 6 and 7 as well a bore 14 which extends below the insert 3 and which to the recess holding the insert is open.
  • the holes 4, 5 and 14 are closed at their outputs 8, 9 and 15 to 17. This creates a coolant channel from the hole 6 as a coolant inlet through the holes 4 and 14 to the insert 3 and through hole 5 to hole 7 as a coolant outlet.
  • the tool shown in Fig. 4 is a milling cutter 18, which in its Tool holder 19 has holes 4 to 7. These drill holes from the coolant inlet 6 or the coolant inlet 7 to a cutter head 20 and open the same in a groove-like recess 21.
  • the Cutter head 20 is firmly connected to the tool holder 19 and via a seal 22 sealed. This creates between the cutter head 20 and the tool holder 10 an almost completely revolving Ring channel, one end of which in channel 4 and the other end leads into channel 5.
  • the cutter head is also known to have several Provide cutting plates 3.
  • the turning tool 1 shown in FIG. 5 essentially corresponds to the turning tool according to fig. 1 to 3. However, in the turning tool 1 shown in FIG. 5 the holes 5 and 14 from the recess for the insert 3rd introduced into the base body 2. Need this way these holes are not closed off. The closing happens with placement of the cutting plate 3. Only the hole 4, the something is arranged offset with respect to the coolant outlet 7, is on her closed rear end 9.
  • the turning tool 1 is set with its cutting plate 3 on a workpiece 23 at a cutting point 24 and will for this purpose from a tool holder 25 which interacts with a turret 26, held.
  • the coolant inlet 6 and Coolant outlet 7 connected to a cooling system 28 of the turret 26.
  • a turret known per se with additional bores 29 Mistake is provided.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Milling Processes (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Meat, Egg Or Seafood Products (AREA)
  • Scissors And Nippers (AREA)
  • Turning (AREA)

Abstract

A tool such as a turning chisel (1) or a milling cutter (18) are indirectly cooled. In order to produce the tool, the requisite bores (4-7)and recesses are provided therein. An arrangement consisting of a tool and a revolver (26) has a corresponding cooling system (28).

Description

Die Erfindung betrifft ein spanendes Werkzeug mit einer Einrichtung zum indirekten Kühlen. Insbesondere betrifft die Erfindung einen Drehstahl bzw. einen Fräser.The invention relates to a cutting tool with a device for indirect cooling. In particular relates to the invention a turning tool or milling cutter.

Bei einer spanenden Bearbeitung von Werkstücken entstehen, insbesondere wenn mit hohen Bearbeitungsgeschwindigkeiten gearbeitet wird, verhältnismäßig hohe Temperaturen. Diese können den Spanvorgang beeinträchtigen und, bedingt durch eine thermische Ausdehnung des Werkzeugs, zu einer Überschreitung der zulässigen Toleranzen führen.When machining workpieces, in particular when working at high processing speeds, relatively high temperatures. These can affect the cutting process and, due to a thermal expansion of the tool, to a The permissible tolerances are exceeded.

Aus diesem Grunde wird bei spanabhebenden Bearbeitungsvorgängen häufig ein Kühlmittel verwandt, welches direkt an die spanabhebende Stelle gebracht wird. Dieses kann einerseits durch gesonderte Düsen erfolgen. Andererseits schlägt beispielsweise die DE 82 22 702 U vor, in dem Werkzeug selbst einen Kanal für Kühlmittel vorzusehen, welcher in eine auf das Werkstück gerichtete Düse des Werkzeugs mündet.For this reason, machining operations are common a coolant is used, which is brought directly to the cutting point becomes. This can be done on the one hand through separate nozzles. on the other hand For example, DE 82 22 702 U proposes in the tool itself to provide a channel for coolant, which in one on the workpiece directed nozzle of the tool opens.

Das auf diese Weise an die spanabhebende Stelle gebrachte Kühlmittel wird dann gemeinsam mit den Spänen abgeführt. Anschließend wird die Mischung aus Spänen und Kühlmittel entweder aufwendig entsorgt oder aber aufwendig getrennt und - gegebenenfalls - einem Recycling zugeführt. The coolant thus brought to the cutting point becomes then removed together with the chips. Then the mixture from chips and coolant either elaborately disposed of or elaborately separated and - if necessary - sent for recycling.

Darüber hinaus ist aus der EP 0 186 067 A1, die den nächstrommenden Stand der Technik beschreibt, ein Werkzeug für spanabhebendes Bearbeiten bekannt, welches eine Zufuhrbohrung und eine Abfuhrbohrung für ein Kühlmittel aufweist. Diese Bohrungen münden in einen Einfuhrkanal und in einen Ausfuhrkanal einer Schneidplatte, sodass die Zufuhrbohrung und die Abfuhrbohrung letztendlich in einen Innenraum der Schneidplatte führen. Nachteilig hierbei ist es jedoch, dass die Schneidplatte nur derart an dem Werkzeug angebracht werden kann, dass sowohl Zufuhrbohrung und Einfuhrkanal als auch Abfuhrbohrung und Ausfuhrkanal miteinander fluchten müssen. Dies schränkt die Verwendung der hier offenbarten Schneidplatte extrem ein. Darüber hinaus ist die Herstellung einer derartigen Schneidplatte mit ihrem Innenraum sehr kostenintensiv, sodass das hier beschriebene Werkzeug insgesamt sehr unwirtschaftlich ist.In addition, EP 0 186 067 A1, which describes the next-to-date state of the art, is a tool for machining Edit known, which has a feed hole and a discharge hole for a coolant. These holes open into an entry channel and into an exit channel of a cutting plate so that the feed hole and ultimately the drain hole in an interior of the Guide the insert. The disadvantage here, however, is that the insert can only be attached to the tool in such a way that both the feed hole and import channel as well as discharge bore and export channel with each other have to swear. This limits the use of those disclosed here Insert extremely one. In addition, the manufacture of such Insert with its interior very cost-intensive, so that here tool described is overall very uneconomical.

Es ist Aufgabe der Erfindung, diesen Nachteil zu vermeiden.It is an object of the invention to avoid this disadvantage.

Als Lösung schlägt die Erfindung ein spanendes Werkzeug gemäss Anspruch 1.As a solution, the invention proposes a cutting tool according to claim 1.

Durch eine derartige Anordnung wird es erstmals möglich, ein Werkzeug unmittelbar zu kühlen bzw. mit einem Kühlmittel in Kontakt zu bringen, ohne dass dieses Kühlmittel an das bearbeitete Werkstück gelangt und somit verloren geht bzw. aufwendig recycelt werden muss. Such an arrangement makes it possible for the first time to have a tool to cool immediately or to bring in contact with a coolant without that this coolant gets to the machined workpiece and thus is lost or has to be laboriously recycled.

Im vorliegenden Zusammenhang bezeichnet somit der Begriff einer indirekten Kühlung jeden Vorgang, bei welchem ein Kühlmittel oder ähnliches mit der spanabhebenden Stelle bzw. der Schärfe einer Schneide oder einer Wendeplatte nicht in Kontakt kommt.In the present context, the term indirect means Cooling every process in which a coolant or the like is used the cutting point or the sharpness of a cutting edge or one The insert does not come into contact.

Zwar ist eine derartige indirekte Kühlung an sich schon bekannt, da bereits Werkzeugrevolver bzw. Werkzeughalter mit Kühlmittelkanälen auf dem Markt sind. Die bekannten Anordnungen wirken jedoch mit konventionellen Werkzeugen, wie Drehstählen oder Fräsern, zusammen. Hierdurch entstehen verhältnismäßig viele Material- bzw. Bauteilübergänge, die zu sehr hohen Temperaturgradienten zwischen der spanabhebenden Stelle und dem eigentlichen Kühlsystem führen. Die herkömmlichen Werkzeuge an sich weisen gerade Mittel zum indirekten Kühlen, wie sie von vorliegender Erfindung vorgeschlagen werden, nicht auf.Indirect cooling of this type is already known per se, since it is already Tool turret or tool holder with coolant channels on the Are market. However, the known arrangements work with conventional ones Tools, such as turning tools or milling cutters. This creates relatively many material or component transitions that lead to very high Temperature gradients between the cutting point and the actual one Lead cooling system. The conventional tools themselves straight indirect cooling means such as those of the present invention not be suggested.

Bei den erfindungsgemäßen Werkzeugen ermöglichen es die Mittel zum indirekten Kühlen, dieses können insbesondere Bohrungen bzw. Kanäle sein, durch welche ein Kühlmittel in das Werkzeug, wie beispielsweise einen Drehstahl oder einen Fräser, geführt werden, die Zahl der Material- bzw. Baugruppenübergänge erheblich zu reduzieren und eine wesentliche bessere Kühlung der spanabhebenden Stelle sicher stellen.In the tools according to the invention, the means for indirect make it possible Cooling, these can be bores or channels, through which a coolant into the tool, such as one Turning tool or a milling cutter, the number of material or Significantly reduce assembly transitions and a much better one Ensure cooling of the cutting point.

Diese außerordentlich gute Kühlung, welche letztlich die spanabhebende Stelle bzw. das Werkzeug nicht unmittelbar mit einem Kühlmittel in Kontakt bringt, ermöglicht die verschiedensten, unerwarteten Vorteile bei der spanenden Bearbeitung. So können beispielsweise temperaturempfindliche Werkstücke mit wesentlich höheren Geschwindigkeiten bearbeitet werden, als dieses bisher der Fall war. Darüber hinaus können besonders empfindliche Werkstücke, die zu chemischen Reaktionen mit dem Kühlmittel neigen, Verwendung finden. Der geschlossene Kühlmittelkreislauf ermöglicht es darüber hinaus, Flüssigkeiten zu verwenden, die speziell für die Kühlung ausgelegt sind, sodass die Kühlung noch darüber hinaus wesentlich effizienter ausgestaltet werden kann. Die wesentlich bessere Kontrolle der Temperatur des Werkzeuges ermöglicht somit auch eine wesentlich bessere Kontrolle der thermischen Ausdehnung, sodass die Maßhaltigkeit der Gesamtanordnung wesentlich verbessert werden kann.This extraordinarily good cooling, which is ultimately the cutting Do not put the tool or tool in direct contact with a coolant brings, enables the most diverse, unexpected advantages in cutting Processing. For example, temperature sensitive Workpieces are processed at much higher speeds, than was previously the case. They can also be particularly sensitive Workpieces that tend to react chemically with the coolant Find use. The closed coolant circuit makes it possible in addition to using liquids specifically for cooling are designed so that the cooling is much more efficient can be designed. The much better control of the temperature of the tool thus also enables much better control the thermal expansion, so that the dimensional accuracy of the overall arrangement can be significantly improved.

Das erfindungsgemäße Werkzeug ermöglicht darüber hinaus auch bei bereits bekannten Spanvorgängen wesentliche Verbesserungen gegenüber eine direkte Beaufschlagung des Werkstücks mit Kühlmittel. Bei sehr hohen Bearbeitungsgeschwindigkeiten neigt das Kühlmittel dazu, von dem Werkstück weggeschleudert zu werden. Dieses ist beispielsweise fliehkraftbedingt. Darüber hinaus führt die hohe Temperatur an der spanenden Stelle zu Verdampfungsprozessen, die einem Nachführen von flüssigem Kühlmittel entgegenwirken. All diese Nachteile treten bei der erfindungsgemäßen indirekten Kühlung nicht auf. Durch geeignete Wahl des Kühlmittels, des Kühlmitteldurchsatzes sowie der Kühleinrichtung lässt sich die Kühlung der spanabhebenden Stelle nahezu beliebig beherrschen. Darüber hinaus ermöglicht es die Erfindung, für die spanende Bearbeitung Schneidöle oder ähnliches zu verwenden, die wegen ihrer schlechten Kühleigenschaften bis dato keine Anwendung finden konnten. The tool according to the invention also enables already known cutting processes significant improvements compared to a direct Applying coolant to the workpiece. At very high processing speeds the coolant tends to come off the workpiece to be flung away. This is due to centrifugal force, for example. In addition, the high temperature at the cutting point leads to evaporation processes, which counteract the tracking of liquid coolant. All these disadvantages occur with the indirect Do not cool down. Through a suitable choice of the coolant, the coolant throughput as well as the cooling device can cool the cutting Master job almost arbitrarily. It also allows the invention, for machining cutting oils or the like use that none because of their poor cooling properties Could find application.

Die Kühlung ist besonders effektiv, wenn die Kühleinrichtung unmittelbar mit einer Schneide des spanenden Werkzeuges in Kontakt steht. Es versteht sich, dass in diesem Zusammenhang jede Baugruppe des Werkzeuges, die spanabhebend wirksam ist, als Schneide anzusehen ist. Insbesondere gilt dies auch für Wendeplatten.Cooling is particularly effective when the cooling device is immediate is in contact with a cutting edge of the cutting tool. It understands that in this context each assembly of the tool that is effective as a cutting edge. The following applies in particular this also for indexable inserts.

Vorzugsweise ist in dem Werkzeug ein Kühlkanal vorgesehen, durch welchen ein Kühlmittel geleitet werden kann. Dieser Kühlkanal weist einen Kühlmitteleinlass und einen Kühlmittelauslass auf. Um die erfindungsgemäße indirekte Kühlung zu gewährleisten, sollte der Kühlmittelauslass von der Schneide des Werkzeugs wegweisen. Das den Kühlkanal verlassende Kühlmittel kann dann, je nach Anwendungsfall, gemeinsam mit den Spänen entsorgt oder in einen separaten Behälter aufgefangen werden. Vorzugsweise weist der Kühlmittelauslass einen Kühlsystemanschluss auf, sodass ein entsprechendes Kühlmittel ohne weiteres aufgefangen und - gegebenenfalls - wiederverwendet werden kann.A cooling channel is preferably provided in the tool, through which a coolant can be passed. This cooling channel has one Coolant inlet and a coolant outlet. To the invention To ensure indirect cooling, the coolant outlet from the Point the cutting edge of the tool away. The one leaving the cooling channel Coolant can then, depending on the application, together with the chips disposed of or collected in a separate container. Preferably the coolant outlet has a cooling system connection, so that a appropriate coolant easily collected and - if necessary - can be reused.

Ist auch der Kühlmitteleinlass mit einem Kühlsystemanschluss versehen, so kann das Kühlmittel ohne weiteres zirkuliert werden. Es versteht sich, dass für das Werkzeug ein separates Kühlsystem vorgesehen sein kann. Andererseits ist es auch ohne weiteres möglich, ein bereits an einer entsprechenden Maschine vorhandenes Kühlsystem zu nutzen. Insbesondere kann das Kühlsystem des Werkzeugs über wenigstens einen Anschluss mit einem Kühlsystem eines Werkzeugrevolvers verbunden sein. Hierbei ist es einerseits möglich, lediglich das momentan genutzte Werkzeug in dem Werkzeugrevolver von einem Kühlmittel durchströmen zu lassen. Andererseits können auch sämtliche Werkzeuge des Revolvers während des Betriebs von einem Kühlmittel durchströmt sein.If the coolant inlet is also provided with a cooling system connection, then so the coolant can be easily circulated. It goes without saying that a separate cooling system can be provided for the tool. on the other hand it is also easily possible to have one already on a corresponding one Machine to use existing cooling system. In particular, the cooling system the tool via at least one connection with a cooling system of a tool turret. On the one hand, it is possible only the currently used tool in the tool turret let coolant flow through it. On the other hand, too all tools of the revolver during the operation of one Be coolant flow.

Zur Herstellung eines erfindungsgemäßen Werkzeugs ist es vorteilhaft, wenn zunächst ein Grundkörper mit den notwendigen Bohrungen für den Kühlmittelfluss bereitgestellt wird. Dann können die freien Flächen des Grundkörpers bearbeitet werden, sodass dieser die für das Werkzeug notwendige Form erhält. Dieser Bearbeitungsvorgang umfasst vorzugsweise die aufwendigen spanenden Bearbeitungen und ähnliches. Hiernach werden die Bohrungen an den notwendigen Positionen verschlossen und so der Kühlkanal bzw. die Kühlkanäle bereitgestellt. Hieran kann sich eine Nachbearbeitung, beispielsweise ein Nachschleifen, anschließen.To produce a tool according to the invention, it is advantageous if First a basic body with the necessary holes for the coolant flow provided. Then the free surfaces of the base body processed so that it is the necessary for the tool Takes shape. This machining process preferably includes the complex ones machining operations and the like. After that, the holes closed at the necessary positions and so the cooling channel or the cooling channels provided. This can be followed up by post-processing, for example, regrinding.

Derartige Werkzeuge sind in der Regel aus hochwertigen und verhältnismäßig harten Materialien gebildet. Daher ist das Bereitstellen der Bohrungen verhältnismäßig zweitaufwendig. Aus diesem Grunde wird vorgeschlagen, dass der Werkzeuggrundkörper aus wenigstens zwei Normgrundkörpern besteht, die fest miteinander verbunden sind bzw. werden: Wenigstens einer dieser Normgrundkörper kann bereits eine vorgefertigte Bohrung aufweisen, sodass bei der eigentlichen Herstellung des Werkzeugs auf den aufwendigen Bohrvorgang verzichtet werden kann. Insbesondere kann ein derartiger Normgrundkörper aus einem Meterhalbzeug, beispielsweise mit rechteckigern Querschnitt, entlang dessen Längsrichtung eine Bohrung verläuft, bereitgestellt werden. Je nach genauer Ausgestaltung des Werkzeugs brauchen dann lediglich kleinere Bohrungen noch bereitgestellt werden.Such tools are usually made of high quality and proportionate hard materials formed. Hence the provision of the holes relatively expensive. For this reason it is proposed that the tool body consists of at least two standard bodies exists that are or will be firmly connected: at least one this standard body can already have a prefabricated bore, so that during the actual production of the tool on the complex Drilling process can be dispensed with. In particular, such Standard body from a semi-finished product, for example with rectangular ones Cross section, along the longitudinal direction of which a bore is provided become. Depending on the precise design of the tool then only smaller holes are still available.

Die Normgrundkörper können beispielsweise durch Schweißen zu dem Grundkörper verbunden werden. Eine derartige Verbindung ist verhältnismäßig einfach herstellbar und hat sich im Betrieb als funktionssicher erwiesen.The standard body can for example by welding to the Basic body to be connected. Such a connection is proportionate easy to manufacture and has proven to be reliable in operation.

Bei komplexeren Kühlkanalausgestaltungen können auch entsprechende Ausnehmungen, in welchen anschließend ein Kühlmittelfluss erfolgen soll, in dem entsprechenden Grundkörper ausgebildet werden. Durch Auflegen einer Verschlussplatte oder durch ähnliche Maßnahmen können danach diese Ausnehmungen verschlossen werden.In the case of more complex cooling channel designs, corresponding ones can also be used Recesses in which a coolant flow should subsequently take place in the corresponding base body are formed. By hanging one Closing plate or similar measures can then be used Recesses are closed.

Besonders vorteilhaft ist ein Verschließen durch das Einsetzen einer Wendeplatte, da hierdurch die Wendeplatte unmittelbar mit dem Kühlmittel in Kontakt kommt und mit dem Einsetzen der Schneide ein ansonsten notwendiger zusätzlicher Bearbeitungsschritt des Verschließens eingespart werden kann.Closing by inserting one is particularly advantageous Indexable insert, as a result of this the insert comes into direct contact with the coolant and with the onset the cutting edge an otherwise necessary additional processing step of closing can be saved.

Das erfindungsgemäße Zerspanungswerkzeug ermöglicht eine trockene Prozessführung bei der Bearbeitung von vielen Materialien. Dies ist besonders aus ökologischer Sicht wertvoll, da die bei dem Zerspanungsprozess anfallenden Späne frei von Kühlmittel sind. Hierdurch werden nicht nur Kosten bei der Entsorgung dieser Späne eingespart, sondern auch bei der Bereitstellung von Kühlmitteln, da dieses sich in einem vorzugsweise geschlossenen Kühlkreislauf befindet und somit lange Zeit benutzt werden kann, ohne dabei verloren zu gehen.The cutting tool according to the invention enables dry process control when processing many materials. This is special Valuable from an ecological point of view, as those that arise during the machining process Chips are free of coolant. This will not just cost you saved in the disposal of these chips, but also in the provision of coolants, since this is preferably in a closed Cooling circuit and can therefore be used for a long time without doing so to get lost.

Weitere Vorteile, Ziele und Eigenschaften vorliegender Erfindung werden anhand der Beschreibung anliegender Zeichnung erläutert, in welcher beispielhaft zwei erfindungsgemäße Drehstähle, ein erfindungsgemäßer Fräser sowie eine erfindungsgemäße Anordnung aus einem Drehstahl und einem Werkzeugrevolver dargestellt sind. In der Zeichnung zeigen:

Figur 1
eine schematische Seitenansicht eines erfindungsgemäßen Drehstahls,
Figur 2
den Drehstahl nach Fig. 1 in Frontansicht,
Figur 3
den Drehstahl nach Fign. 1 und 2 im Schnitt,
Figur 4
einen erfindungsgemäßen Fräser in schematischer Darstellung und
Figur 5
eine erfindungsgemäße Anordnung aus einem erfindungsgemäßen Drehstahl und einem Werkzeugrevolver in schematischer Darstellung.
Further advantages, objectives and properties of the present invention are explained with the aid of the description of the attached drawing, in which two turning steels according to the invention, a milling cutter according to the invention and an arrangement according to the invention consisting of a turning tool and a tool turret are shown as examples. The drawing shows:
Figure 1
2 shows a schematic side view of a turning tool according to the invention,
Figure 2
1 in front view,
Figure 3
the turning tool according to fig. 1 and 2 on average,
Figure 4
a cutter according to the invention in a schematic representation and
Figure 5
an arrangement according to the invention from a turning tool according to the invention and a tool turret in a schematic representation.

Das in Fig. 1 dargestellte Werkzeug ist ein Drehstahl 1, welcher im wesentlichen aus einem Grundkörper 2 und einer Schneidplatte 3 besteht. Der Grundkörper 2 weist zwei Hauptbohrungen 4 und 5 auf, die sich im wesentlichen parallel zueinander in Längserstreckungsrichtung des Grundkörpers erstrecken. Die beiden Hauptbohrungen 4 und 5 sind jeweils zentrale Bohrungen zweier Normkörper 10 und 11, die mittels zweier Schweißnähte 12 und 13 zu dem Grundkörper 2 zusammengesetzt sind.The tool shown in Fig. 1 is a turning tool 1, which is essentially consists of a base body 2 and a cutting plate 3. The Base body 2 has two main bores 4 and 5, which are essentially parallel to each other in the longitudinal direction of the main body extend. The two main holes 4 and 5 are each central holes two standard bodies 10 and 11, which by means of two weld seams 12 and 13 are assembled to form the base body 2.

Darüber hinaus weist der Grundkörper 2 noch die Bohrungen 6 und 7 sowie eine Bohrung 14 auf, welche bis unter die Schneidplatte 3 reicht und welche zu der die Schneidplatte haltenden Ausnehmung offen ist.In addition, the base body 2 also has the bores 6 and 7 as well a bore 14 which extends below the insert 3 and which to the recess holding the insert is open.

Die Bohrungen 4, 5 und 14 sind an ihren Ausgängen 8, 9 und 15 bis 17 verschlossen. Auf diese Weise entsteht ein Kühlmittelkanal, der von der Bohrung 6 als Kühlmitteleinlass über die Bohrungen 4 und 14 zur Schneidplatte 3 und über die Bohrung 5 zur Bohrung 7 als Kühlmittelauslass reicht.The holes 4, 5 and 14 are closed at their outputs 8, 9 and 15 to 17. This creates a coolant channel from the hole 6 as a coolant inlet through the holes 4 and 14 to the insert 3 and through hole 5 to hole 7 as a coolant outlet.

Das in Fig. 4 dargestellte Werkzeug ist ein Fräser 18, welcher in seiner Werkzeugaufnahme 19 Bohrungen 4 bis 7 aufweist. Diese Bohrungen führen von dem Kühlmitteleinlass 6 bzw. des Kühlmitteleinlass 7 zu einem Messerkopf 20 und münden in einer nutartigen Ausnehmung 21 desselben. Der Messerkopf 20 ist fest mit der Werkzeugaufnahme 19 verbunden und über eine Dichtung 22 abgedichtet. Auf diese Weise entsteht zwischen dem Messerkopf 20 und der Werkzeugaufnahme 10 ein nahezu vollständig umlaufender Ringkanal, dessen eines Ende in den Kanal 4 und dessen anderes Ende in den Kanal 5 führt.The tool shown in Fig. 4 is a milling cutter 18, which in its Tool holder 19 has holes 4 to 7. These drill holes from the coolant inlet 6 or the coolant inlet 7 to a cutter head 20 and open the same in a groove-like recess 21. The Cutter head 20 is firmly connected to the tool holder 19 and via a seal 22 sealed. This creates between the cutter head 20 and the tool holder 10 an almost completely revolving Ring channel, one end of which in channel 4 and the other end leads into channel 5.

Der Messerkopf ist darüber hinaus in bekannter Weise mit mehreren Schneidplatten 3 versehen. The cutter head is also known to have several Provide cutting plates 3.

Der in Fig. 5 dargestellte Drehstahl 1 entspricht im wesentlichen dem Drehstahl nach Fign. 1 bis 3. Bei dem in Fig. 5 dargestellten Drehstahl 1 sind jedoch die Bohrungen 5 und 14 von der Ausnehmung für die Schneidplatte 3 ausgehend in den Grundkörper 2 eingebracht. Auf diese Weise brauchen diese Bohrungen nicht extra verschlossen werden. Das Verschließen geschieht mit Aufsetzen der Schneidplatte 3. Lediglich die Bohrung 4, die etwas versetzt bezüglich des Kühlmittelauslasses 7 angeordnet ist, ist an ihrem hinteren Ende 9 verschlossen.The turning tool 1 shown in FIG. 5 essentially corresponds to the turning tool according to fig. 1 to 3. However, in the turning tool 1 shown in FIG. 5 the holes 5 and 14 from the recess for the insert 3rd introduced into the base body 2. Need this way these holes are not closed off. The closing happens with placement of the cutting plate 3. Only the hole 4, the something is arranged offset with respect to the coolant outlet 7, is on her closed rear end 9.

In der Darstellung nach Fig. 5 setzt der Drehstahl 1 mit seiner Schneidplatte 3 an einem Werkstück 23 an einer spanabhebenden Stelle 24 an und wird hierzu von einem Werkzeughalter 25, der mit einem Revolver 26 zusammenwirkt, gehalten. Über Anschlüsse 27 sind der Kühlmitteleinlass 6 und Kühlmittelauslass 7 mit einem Kühlsystem 28 des Revolvers 26 verbunden. Hierzu ist ein an sich bekannter Revolver mit zusätzlichen Bohrungen 29 versehen.5, the turning tool 1 is set with its cutting plate 3 on a workpiece 23 at a cutting point 24 and will for this purpose from a tool holder 25 which interacts with a turret 26, held. The coolant inlet 6 and Coolant outlet 7 connected to a cooling system 28 of the turret 26. For this purpose, a turret known per se with additional bores 29 Mistake.

Es versteht sich, dass die genaue Lage und Anordnung der Kühlmittelkanäle bzw. der diese Kühlmittelkanäle bedingenden Bohrungen, Ausnehmungen und Anschlüsse je nach konkretem Anwendungsfall geeignet gewählt sind.It is understood that the exact location and arrangement of the coolant channels or the bores, recesses that cause these coolant channels and connections are selected appropriately depending on the specific application.

Claims (12)

  1. A cutting tool with at least one cutting edge (3) and one device for indirect cooling, characterized by an indexable insert that is cooled by the cooling device as cutting edge (3), the tool comprising a recess or bore (14) for a coolant that is sealed by the indexable insert or an indexable insert holder.
  2. The cutting tool according to claim 1, characterized in that the indexable insert is in direct contact with the cooling device.
  3. The cutting tool according to any of the claims 1 and 2, characterized by a cooling channel (4, 5, 6, 7) with a coolant inlet (6) and a coolant outlet (7) away from the cutting edge (3).
  4. The cutting tool according to claim 3, characterized in that the coolant outlet (7) is provided with a connection (27) to the cooling system.
  5. The cutting tool according to claim 3 or 4, characterized in that the coolant inlet (6) is provided with a connection (27) to the cooling system.
  6. A lathe tool (1) having the features of any of the claims 1 to 5.
  7. The lathe tool (1) according to claim 6, characterized in that the lathe tool (1) is composed of at least two standard base bodies (10, 11) that are fixedly joined together, at least one of the standard base bodies (10, 11) comprising a bore (4, 5, 6, 7, 14).
  8. The lathe tool (1) according to claim 7, characterized in that the bore (4, 5, 6, 7, 14) is closed at a clearance angle of the lathe tool, at a cutting edge relief face of the lathe tool and/or at back of the lathe tool.
  9. A milling cutter (18) having the features of any of the claims 1 to 5.
  10. An arrangement consisting of a tool (1) having the features of any of the claims 1 to 9 and of a turret (26) carrying the tool, characterized in that the tool comprises at least one cooling system (4, 5, 6, 7, 14, 21) for indirect cooling which is connected with a cooling system (28) of the turret (26) by at least one connection (27).
  11. The arrangement according to claim 10, characterized in that a first connection (27) is connected to a coolant inlet (6) and a second connection (27) is connected to a coolant outlet (7) of the tool (1).
  12. The arrangement according to any of the claims 10 or 11, characterized in that a first connection (27) is connected to a first bore (29) of the turret (26) and a second connection (27) is connected to a second bore (29) of the turret (26).
EP00993698A 1999-12-31 2000-12-19 Cutting tool with device for indirect cooling of an indexable insert Expired - Lifetime EP1242214B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19963956 1999-12-31
DE19963956 1999-12-31
DE10016046 2000-04-01
DE10016046 2000-04-01
PCT/DE2000/004516 WO2001049448A2 (en) 1999-12-31 2000-12-19 Tool with indirect cooling system, arrangement of such a tool and a revolver and method for the production of said tool

Publications (2)

Publication Number Publication Date
EP1242214A2 EP1242214A2 (en) 2002-09-25
EP1242214B1 true EP1242214B1 (en) 2004-04-07

Family

ID=26005118

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00993698A Expired - Lifetime EP1242214B1 (en) 1999-12-31 2000-12-19 Cutting tool with device for indirect cooling of an indexable insert

Country Status (7)

Country Link
EP (1) EP1242214B1 (en)
JP (1) JP2003519016A (en)
AT (1) ATE263655T1 (en)
AU (1) AU2830801A (en)
DE (2) DE50006020D1 (en)
ES (1) ES2218283T3 (en)
WO (1) WO2001049448A2 (en)

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DE102004040972A1 (en) * 2004-08-24 2006-03-02 Boehringer Werkzeugmaschinen Gmbh Temperature compensated tool

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SE522075C2 (en) * 2001-10-23 2004-01-13 Svensk Kaernbraenslehantering Procedure for friction stir welding
US8061241B2 (en) * 2009-04-06 2011-11-22 Creare Incorporated Indirect cooling of a cutting tool
US8215878B2 (en) * 2009-04-22 2012-07-10 Creare Incorporated Indirect cooling of a rotary cutting tool
DE102013102456A1 (en) * 2013-03-12 2014-09-18 Karl Keppler Maschinenbau Gmbh Tool for a machine tool
DE102013114792A1 (en) * 2013-09-13 2015-03-19 Jakob Lach Gmbh & Co. Kg Cutting tool, in particular drilling and milling tool
CN104551044A (en) * 2014-12-26 2015-04-29 苏州欧美克合金工具有限公司 Lathe tool with built-in cooling curve
US10413977B2 (en) 2015-11-12 2019-09-17 5Me Ip, Llc Temperature management for a cryogenically cooled boring tool
DE102017110132A1 (en) * 2017-05-10 2018-11-15 Kennametal Inc. Abstechdrehwerkzeug
WO2023127352A1 (en) * 2021-12-28 2023-07-06 株式会社プロテリアル Cutting device, holder and cutting method

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FR1173190A (en) * 1956-11-28 1959-02-20 Cold and hot metal machining with internally cooled tools and its applications
US3455000A (en) * 1966-10-25 1969-07-15 Gen Motors Corp Cutting tool and tip therefor
JPS5211493A (en) * 1975-07-18 1977-01-28 Tokico Ltd Cutting tool
GB1567252A (en) * 1976-08-24 1980-05-14 Kennametal Inc Connection arrangements for tool holders
CS250078B1 (en) * 1984-12-14 1987-04-16 Jaroslav Rasa Machining tool
ATE47546T1 (en) * 1984-12-14 1989-11-15 Tovarne Strojarskej Tech TOOL FOR MACHINING.
US5829926A (en) * 1994-04-27 1998-11-03 Kennametal Hertel Ag Rotary tool, in particular a drill
US5761974A (en) * 1996-07-22 1998-06-09 Board Of Regents Of The University Of Nebraska System and method for machining heat resistant materials
JPH1058220A (en) * 1996-08-20 1998-03-03 Daikin Ind Ltd End mill processing device
JPH10296505A (en) * 1997-04-23 1998-11-10 Kisoo Kk Cutting tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004040972A1 (en) * 2004-08-24 2006-03-02 Boehringer Werkzeugmaschinen Gmbh Temperature compensated tool
DE102004040972B4 (en) * 2004-08-24 2015-09-10 Mag Ias Gmbh Method for eliminating or compensating the temperature-induced expansion of a tool turret of a lathe and a suitable lathe

Also Published As

Publication number Publication date
DE50006020D1 (en) 2004-05-13
AU2830801A (en) 2001-07-16
EP1242214A2 (en) 2002-09-25
ES2218283T3 (en) 2004-11-16
DE10084195D2 (en) 2003-01-30
JP2003519016A (en) 2003-06-17
WO2001049448A2 (en) 2001-07-12
ATE263655T1 (en) 2004-04-15
WO2001049448A3 (en) 2001-11-15

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